(n) A sex act which involves someone with diarrhea engaging in receptive anal sex. The removal of erect penis causes a rocket of liquid feces to stream out of the person's asshole. Considered VERY gay in Trinidad.
Roger: What's the number of a good carpet cleaning service?
David: Why?
Roger: I gave this girl a mud volcano last night and there is shit everywhere!
Selfish Michael: Gross!
David: Why?
Roger: I gave this girl a mud volcano last night and there is shit everywhere!
Selfish Michael: Gross!
by Room'd July 4, 2011